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Amazon.com: Small Parts Internal Tooth Lock Washer, Steel, Zinc Finish, 3/8" Bolt Size, 0.3910" ID, 0.6810" OD, 0.0360" Thick, Pack Of 100 : Industrial & Scientific
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Amazon.com: uxcell Split Lock Washer, 3/4-Inch 304 Stainless Steel Spring Lock Washer 5pcs : Industrial & Scientific
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Amazon.com: uxcell Internal Tooth Star Washers M16 x 28mm 304 Stainless Steel Push on Lock Washer Locking Clips Fastener 50pcs : Industrial & Scientific
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Hillman 3/8-in Galvanized/Uncoated Steel Split Lock Washer in the Lock Washers department at Lowes.com
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